504
CDUS41 KBOX 130522
CLIBOS
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
122 AM EDT SAT SEP 13 2025
...............................
..THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 12 2025
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1872 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 68 1127 AM 93 1961 75 -7 81
MINIMUM 58 1134 PM 43 1875 60 -2 58
AVERAGE 63 67 -4 70
PRECIPITATION (IN)
YESTERDAY 0.00 2.95 1960 0.11 -0.11 0.00
MONTH TO DATE 1.43 1.28 0.15 T
SINCE SEP 1 1.43 1.28 0.15 T
SINCE JAN 1 26.38 29.32 -2.94 34.14
SNOWFALL (IN)
YESTERDAY 0.0 0.0 2000 0.0 0.0 0.0
2001
2002
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE SEP 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
DEGREE DAYS
HEATING
YESTERDAY 2 1 1 0
MONTH TO DATE 12 10 2 1
SINCE SEP 1 12 10 2 1
SINCE JUL 1 19 19 0 3
COOLING
YESTERDAY 0 3 -3 5
MONTH TO DATE 32 55 -23 37
SINCE SEP 1 32 55 -23 37
SINCE JAN 1 789 755 34 847
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION NE (60)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION NE (50)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 9.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 83 700 PM
LOWEST 60 200 AM
AVERAGE 72
......................................................
THE BOSTON MA CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 93 1957
MINIMUM TEMPERATURE (F) 59 45 1911
1985
SUNRISE AND SUNSET
SEPTEMBER 13 2025.....SUNRISE 622 AM EDT SUNSET 657 PM EDT
SEPTEMBER 14 2025.....SUNRISE 623 AM EDT SUNSET 655 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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